Silverlight 客户端本地消息通讯

╰半夏微凉° 2022-05-15 19:35 184阅读 0赞

在Silverlight 3 中添加了客户端不同应用程序之间的通信机制，当一台电脑上同时运行多个Silverlight 应用程序的时候，本地消息通讯可以在不同的Silverlight之间创建一个消息通道，有点像是一个Socket链接，一方在监听，一方发送。

## 发送端 ##

public partial class LM_Sender : UserControl
        {
            //定¨义?本?地?消?息￠发￠送í对?象ó，?这a个?最?关?键ü，?接ó收?方?和í发￠送í方?的?实μ例y名?必?须?一?样ù才?行D，?好?比èMQ的?通¨道à一?样ù
            private LocalMessageSender msgSender = new LocalMessageSender("terryfeng");
            public LM_Sender()
            {
                InitializeComponent();
                this.Loaded += new RoutedEventHandler(LM_Sender_Loaded);
            }
    
            void LM_Sender_Loaded(object sender, RoutedEventArgs e)
            {
                //提á前°加ó载?，?创′建¨消?息￠发￠送í完ê成é的?事?件t处|理í
                msgSender.SendCompleted +=
                    new EventHandler<SendCompletedEventArgs>(msgSender_SendCompleted);
            }
    
            private void btnSent_Click(object sender, RoutedEventArgs e)
            {
                //发￠送í消?息￠
                msgSender.SendAsync(tbInput.Text);
            }
    
            void msgSender_SendCompleted(object sender, SendCompletedEventArgs e)
            {
                //显?示?回?复′的?消?息￠
                MessageBox.Show(e.Response);
            }
        }

## 接收端 ##

public partial class LM_Rec : UserControl
     {
         public LM_Rec()
         {
             InitializeComponent();
             this.Loaded += new RoutedEventHandler(LM_Rec_Loaded);
         }
    
         void LM_Rec_Loaded(object sender, RoutedEventArgs e)
         {
             //创′建¨接ó收?消?息￠对?象ó
             LocalMessageReceiver msgRec = new LocalMessageReceiver("terryfeng");
             //创′建¨接ó收?消?息￠的?事?件t处|理í
             msgRec.MessageReceived +=
                 new EventHandler<MessageReceivedEventArgs>(msgRec_MessageReceived);
             //开a始?侦ì听y
             msgRec.Listen();
         }
    
         void msgRec_MessageReceived(object sender, MessageReceivedEventArgs e)
         {
             //显?示?收?到?的?消?息￠
             tbkRec.Text = e.Message;
             //反′馈?消?息￠给?发￠送í者?
             e.Response = "我ò收?到?消?息￠了?，?谢?谢?！?";
         }
     }